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Food Chain - Ecosystem
In a food chain, the food energy is transformed from a given source through a series of species, each of which eats the one before itself in the chain. This repeated series of eating and being eaten is always initiated with green plants, which convert radiant energy into chemical energy which is stored in food. A very simple food chain is:
Sun → grass → goat → man
Each transfer a proportion of the food, energy is lost as heat. This limits the number of links or steps in a food chain, usually to four or five. In aquatic ecosystems, microscopic green plants called phytoplankton and algae play the same role as grasses in a pasture or trees in a forest.
What are enzyme cofactors? Some enzymes require other associated molecules to work. These molecules are known as enzyme cofactors and they can be, for example, organic ions lik
Slow creeping
Theca - body form Protozoans It is a close-fitting hard structure around the plasma membrane, mainly composed of cellulose. It can be compared with the ceil wall of a plant ce
It is a complex of antibody bound to antigen, which contains complement components.
what is mean by autotrophic ?
Q. Why is carbon dioxide concentration a limiting factor of the photosynthesis process? And When the carbon dioxide concentration is increased indefinitely is photosynthesis also i
Q. What are the events that mark the end and the beginning of the second interphase period and what happens in the cell in this period? The second interphase period is the S, i
Studying the main parts of a flower Study specimens of large easy flowers such as tulips or lilies. Count the stamens and observe how they are arranged about the central pistil
REMOVAL OF TESTIS - It is male hypogonadism. (1 ) BEFORE PUBERTY - Cestration before puberty results in permanent sterility. This condition is eunuchoidism & shows the
Which type of reproductive structure has a better chance of survival if there was a sudden temperature change in its environment?
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